Details about the technology are not available on Furukawakikou's English website (perhaps because the patent is pending), but the tool appears to incorporate a conveyor belt design.

Geek.com speculates that the device works with a frictionless material — maybe Teflon or silicone — so that the food doesn't get stuck and that the surfaces of the table and the scooper are hydrophobic. Although in the case of ketchup and mayonnaise they probably would have to be oleophobic. There also is a good chance that the surface is nanostructured to achieve such a degree of oleophobicity.